After menopause, orca mothers serve as pod matriarchs

March 5, 2015 8:50 PM

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For some species, like salmon, death follows reproduction within minutes. For a few species, like whales and humans, females can live on for several decades after their prime birthing years are past. But why?

Recently, a team of researchers set out to answer that question. Their hypothesis: aging orca matriarchs serve as vital sources of ecological information, especially when the going gets tough.

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